Павел
95 lines
2.5 KiB
Python
95 lines
2.5 KiB
Python
import cProfile
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from typing import Optional
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Node = tuple[int, int, int]
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def get_data(input_file):
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with open(input_file, "r") as file:
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data = file.read().splitlines()
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return data
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def cidr4_to_node(cidr4: str) -> Node:
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ip, mask_len = cidr4.strip().split("/")
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mask_len = int(mask_len)
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added_ips_number = 0
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a, b, c, d = list(map(int, ip.split(".")))
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ip_value = a * 256**3 + b * 256**2 + c * 256**1 + d * 256**0
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return ip_value, mask_len, added_ips_number
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def data_to_nodes(data: list[str]) -> list[Node]:
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return sorted(map(cidr4_to_node, data))
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def get_mask(node: Node) -> int:
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value, mask_len, _ = node
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x = (2**mask_len - 1) << (32 - mask_len)
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mask = value & x
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return mask
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def get_parent_mask(node: Node) -> Optional[int]:
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if node[1] == 0:
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return None
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return get_mask((node[0], node[1] - 1, node[2]))
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def have_same_parent(a: Node, b: Node) -> bool:
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return a[1] == b[1] and get_parent_mask(a) == get_parent_mask(b)
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def merge_nodes(nodes: list[Node]) -> list[Node]:
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pass
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def main():
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file = "cidr4.txt"
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required_len = 15
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data = get_data(file)
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nodes = data_to_nodes(data)
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for n in nodes:
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print(n)
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if __name__ == "__main__":
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assert cidr4_to_node("4.78.139.0/24") == (72256256, 24, 0)
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assert cidr4_to_node("0.0.0.0/32") == (0, 32, 0)
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bin_a = "10011000000000001000010000010000"
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assert len(bin_a) == 32
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value_a = int(bin_a, 2)
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bin_b = "10011100000000000000000000101011"
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assert len(bin_b) == 32
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value_b = int(bin_b, 2)
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bin_c = "10011000000000000000000000000000"
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assert len(bin_c) == 32
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value_c = int(bin_c, 2)
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bin_d = "11111100000000000000000000000000"
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assert len(bin_c) == 32
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value_d = int(bin_d, 2)
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assert get_mask((value_a, 5, 0)) == value_c
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assert get_mask((value_b, 5, 0)) == value_c
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assert get_mask((0, 1, 0)) == 0
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assert get_mask((0, 0, 0)) == 0
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assert get_parent_mask((value_a, 6, 0)) == value_c
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assert get_parent_mask((value_b, 6, 0)) == value_c
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assert get_parent_mask((0, 1, 0)) == 0
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assert get_parent_mask((0, 0, 0)) is None
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assert have_same_parent((value_a, 6, 0), (value_b, 6, 0)) is True
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assert have_same_parent((value_a, 6, 0), (value_b, 5, 0)) is False
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assert have_same_parent((value_a, 6, 0), (value_d, 6, 0)) is False
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assert have_same_parent((value_a, 6, 0), (0, 1, 0)) is False
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assert have_same_parent((value_a, 6, 0), (0, 0, 0)) is False
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# main()
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# cProfile.run("main()")
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